The (n,t) Reaction on ⁹Be at 14.6 MeV

The sum of the ⁹Be(n, t₀)⁷Li and ⁹Be(n, t₁)7Li reaction cross sections was measured at an incident neutron energy of 14.6 MeV using a counter telescope for triton detection. The angular distribution of these reactions was obtained for the center of mass angles up to 90 deg. It is nearly isotropic. Assuming a forward-backward symmetry of the angular distribution, the total cross section for the (n, t) reaction on ⁹Be is found to be 24 ± 2 mb. This result compares favorably with the data from the tritium beta-counting experiments.